/**
 * Copyright 2010 Nicholas Alexander Cross
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.dataporter.data;

import org.apache.commons.lang.builder.EqualsBuilder;
import org.apache.commons.lang.builder.HashCodeBuilder;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class DataObject {

    private final String entityName;
    private final List<String> primaryKeyNames;
    private final Map<String, Object> data = new HashMap<String, Object>();

    private boolean isNew;

    public DataObject( String entityName ) {
        this.entityName = entityName;
        this.primaryKeyNames = null;
    }

    public DataObject( String entityName, List<String> primaryKeyNames ) {
        this.entityName = entityName;
        this.primaryKeyNames = primaryKeyNames;
    }

    public String getEntityName() {
        return entityName;
    }

    public List<String> getPrimaryKeyNames() {
        return primaryKeyNames;
    }

    public void put( String key, Object value ) {
        data.put( key, value );
    }

    public Object get( String key ) {
        return data.get( key );
    }

    public void remove(String key) {
        data.remove( key );
    }

    public Map<String, Object> getData() {
        return data;
    }

    public void setIsNew( boolean isNew ) {
        this.isNew = isNew;
    }

    public boolean isNew() {
        return isNew;
    }

    @Override
    public boolean equals( Object obj ) {

        if (obj instanceof DataObject) {
            DataObject o = (DataObject) obj;
            EqualsBuilder builder = new EqualsBuilder();
            builder.append( entityName, o.entityName );

            if ( primaryKeyNames != null )
            {
                builder.append( primaryKeyNames.toArray(), o.primaryKeyNames.toArray() );
            }

            builder.append( data.keySet().toArray(), o.data.keySet().toArray() );
            builder.append( data.values().toArray(), o.data.values().toArray() );
            return builder.isEquals();
        }

        return super.equals( obj );
    }

    @Override
    public int hashCode() {
        HashCodeBuilder builder = new HashCodeBuilder();
        builder.append( entityName );

        if ( primaryKeyNames != null )
        {
            builder.append( primaryKeyNames.toArray() );
        }
        
        builder.append( data.keySet().toArray() );
        builder.append( data.values().toArray() );
        return builder.toHashCode();
    }
}
